Excellent Member

Does the drive show a Safe Disconnect option? If so, have you done that and then reconnected?

Have you formatted the drive yourself?

If it shows in Device Manager, can you try to uninstall it there?

I don't really know why a drive would work with one Windows 7 system and not another, unless some drivers were not available. But USB stuff is fairly normal, although USB 3.0 drivers are not native to Windows 7 and need to be installed. But the drive should still work as in 2.0 mode.

Excellent Member

A few things don't use a hub to connect and don't use a cable longer that the one supplied. If the drive has a separate power supply try pluggging directly into the outlet instead of a surge protector. These external drives can be very sensitive to low voltage and sometmes those things can cause the problem. Also a lot of PCs have prety wimpy power supplies.
Joe